Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort:
Hottest Latest Alphabetical (A-Z) Alphabetical (Z-A)
Type:
All Topic Review Biography
Topic Review
Enzymes for Lignin Depolymerization
Lignin, a rigid polymer composed of phenolic subunits with high molecular weight and complex structure, ranks behind only cellulose in the contribution to the biomass of plants. Therefore, lignin can be used as a new environmentally friendly resource for the industrial production of a variety of polymers, dyes and adhesives. Since laccase was found to be able to degrade lignin, increasing attention had been paid to the valorization of lignin. The enzymes involved in lignin depolymerization are mainly divided into four categories: laccase, lignin peroxidase (LiP), manganese peroxidase (MnP) and versatile peroxidase (VP).
  • 550
  • 05 Aug 2022
Topic Review
Re-Thinking Data Strategy and Integration for Artificial Intelligence
The use of artificial intelligence (AI) is becoming more prevalent across industries such as healthcare, finance, and transportation. Artificial intelligence is based on the analysis of large datasets and requires a continuous supply of high-quality data. 
  • 550
  • 30 Jun 2023
Topic Review
Performance Assessment of Offshore Oil and Gas Platforms
Within the oil and gas (O&G) production and drilling processes of today, there are challenges in maintaining the system for numerous reasons, ranging from international competition to market globalization, regulatory compliance, and the complexity brought by technological advancement. Furthermore, with the inflating maintenance costs and increasing failure frequency impacting production safety, the issue of non-sustainability in O&G companies is made worse by surplus or inefficient maintenance. Thus, maintenance has direct sustainability-related impacts regarding social importance, influence on energy demand, exploiting physical resources, and environmental pollution. Since the performance and competitiveness of an industry are affected by reliability and environmental safety, it has become important to find a practical approach for sustainability and integrate it into maintenance processes.
  • 541
  • 10 Feb 2022
Topic Review
Properties of HVOF-PVD Duplex Coatings
The morphology (surface and cross-section) of the high-velocity oxygen–fuel coupled physical vapor deposition (HVOF-PVD)  duplex coating and its mechanical (stress and load-bearing capacity), tribological (wear and lubrication), and corrosion (chemical and electrochemical) behavior are described and discussed for surface protective concern. The duplex coating involves a combination of a thick, hard HVOF bottom layer and a thin, hard yet tough PVD top layer. The hardness and modulus of the HVOF coating are between those of the soft substrate and the hard PVD coating, which thereafter provides a smooth transition and effective support between them. As a result, the HVOF interlayer can eliminate the plastic deformation of the substrate due to stress concentration under heavy load, effectively avoiding the “eggshell effect”. As expected, the duplex coating system would provide excellent load-bearing capacity. In terms of tribology, the wear resistance of the HVOF-PVD duplex coating is significantly improved compared to that of PVD monolayer coating. 
  • 541
  • 03 Nov 2022
Topic Review
Achieving Sustainability in Solar Energy Firms in Turkey
Lean principles and sustainability are considered important terms in business. Solar firms are witnessing great competition to fulfill energy requirements, suffering from a huge amount of waste, negatively affecting the sustainability dimensions. Thus, the aim of the study is to build a framework for solar energy firms to achieve sustainability through adopting lean principles, which will help to fix many problems as waste and costs. The method included reviewing the literature to explore the founding of the relation between the two terms, and using a questionnaire that was directed to the responsible people in Turkish solar energy firms. The results of the survey were analyzed to: (1) Find out what the responsible people think about the two terms lean and sustainability; (2) Measure the probable relationship between lean principles and sustainability dimensions by applying a linear regression test; (3) Use the results of point number two to build the framework. The result showed there was a high level of relative importance about the two terms from the point of view of managers and experts in solar firms. In addition, the study found a relationship between adopting pull and flow principles of lean, and achieving economic and social dimensions of sustainability, this finding is represented in a framework. 
  • 535
  • 19 Jan 2022
Topic Review
Occurrence of Bearing Currents in Electric Machines
In electrical machines, there are numerous negative phenomena of a destructive nature. The constructors of electrical machines try to limit these phenomena and/or minimize their negative effects. One such phenomenon in electrical machines is the occurrence of bearing voltages and currents. Despite their simple structure, the bearings are susceptible to damage to the raceway surface and rolling elements. Even small traces and imperfections of these surfaces may cause a serious failure resulting in the bearing being excluded from further operation.
  • 535
  • 11 Jul 2022
Topic Review
Cartridge (Respirator)
}} A respirator cartridge or canister is a container that cleans pollution from air. Employees working in a polluted atmosphere use respirators for health preservation. If the air in the workplace is polluted with noxious gases, but contains a lot of oxygen they often use air-purifying respirators (APR). These respirators provide employees breathable air by removing pollution from ambient air using canisters or cartridges. There are cartridges of different types, and they must be chosen correctly and replaced in a timely manner.
  • 534
  • 16 Nov 2022
Topic Review
Different Portland Cement Types in South Africa
Cement has long been recognized as an energy- and emission-intensive construction material. Cement production has recently experienced significant growth despite its high energy consumption, resource usage, and carbon emissions.
  • 516
  • 28 Jul 2023
Topic Review
Circular Economy, Industry 4.0 and Supply Chain
The vertical disintegration of companies has increased the complexity of management in terms of time and quality and increased uncertainty in the markets, making it impossible today for companies to compete effectively if they are isolated from their suppliers and other stakeholders. In this context, adopting the concept of supply chains (SCs) is increasingly essential for a company’s performance. Moreover, two themes are being increasingly discussed in the context of SCs, the circular economy (CE) and Industry 4.0 (I4.0). The CE paradigm consists of a possible way to achieve environmental objectives and economic sustainability by developing systemic changes that go beyond the individual company and involve the other actors in the SC, contributing to adding value to a product and/or service
  • 513
  • 26 May 2022
Topic Review
Hyperloop Academic Research
Hyperloop is a proposed very high-speed ground transportation system for both passenger and freight that has the potential to be revolutionary, and which has attracted much attention in the last few years. The concept was introduced in its modern form relatively recently, yet substantial progress has been made in the past years, with research and development taking place globally, from several Hyperloop companies and academics. 
  • 512
  • 05 Jul 2021
  • Page
  • of
  • 30
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of Social Sciences
Encyclopedia of COVID-19
Encyclopedia of Fungi
Encyclopedia of Digital Society, Industry 5.0 and Smart City
ScholarVision Creations
Feedback